In the given sentence, simple subject is volcano , simple predicate is erupted, complete subject is The simmering volcano and complete predicate is erupted suddenly.
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What is simple predicate?</h3>
A sentence's primary verb or verbal phrase, which describes the action the subject takes, is the simple predicate. The sole verb or verb phrase that makes up a simple predicate is in the sentence. The sentence is devoid of any modifiers. On occasion, a verb phrase will be "interrupted" or "come in between" by a modifier. The basic predicate in this instance does not include the modifier. The verb or verb phrase alone, without any modifiers, is the sole component of the simple predicate.
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